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<div class="title">internal.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#ifndef ENTT_META_INTERNAL_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="preprocessor">#define ENTT_META_INTERNAL_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160; </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160; </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;../core/attribute.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;../config/config.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;../core/fwd.hpp&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;../core/type_info.hpp&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;../core/type_traits.hpp&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;type_traits.hpp&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">class </span>meta_any;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">struct </span>meta_handle;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">class </span>meta_storage {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">using</span> storage_type = std::aligned_storage_t&lt;<span class="keyword">sizeof</span>(<span class="keywordtype">void</span> *), <span class="keyword">alignof</span>(<span class="keywordtype">void</span> *)&gt;;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keyword">using</span> copy_fn_type = void(meta_storage &amp;, <span class="keyword">const</span> meta_storage &amp;);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">using</span> steal_fn_type = void(meta_storage &amp;, meta_storage &amp;);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">using</span> destroy_fn_type = void(meta_storage &amp;);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class="keyword">typename</span> = std::<span class="keywordtype">void</span>_t&lt;&gt;&gt;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">struct </span>type_traits {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> instance(meta_storage &amp;buffer, Args &amp;&amp;... args) {</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; buffer.instance = <span class="keyword">new</span> Type{std::forward&lt;Args&gt;(args)...};</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">new</span> (&amp;buffer.storage) Type *{<span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(buffer.instance)};</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; }</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> destroy(meta_storage &amp;buffer) {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">delete</span> <span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(buffer.instance);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> copy(meta_storage &amp;to, <span class="keyword">const</span> meta_storage &amp;from) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; to.instance = <span class="keyword">new</span> Type{*<span class="keyword">static_cast&lt;</span><span class="keyword">const </span>Type *<span class="keyword">&gt;</span>(from.instance)};</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">new</span> (&amp;to.storage) Type *{<span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(to.instance)};</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> steal(meta_storage &amp;to, meta_storage &amp;from) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">new</span> (&amp;to.storage) Type *{<span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(from.instance)};</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; to.instance = from.instance;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; };</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type&gt;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">struct </span>type_traits&lt;Type, std::enable_if_t&lt;sizeof(Type) &lt;= sizeof(void *) &amp;&amp; std::is_nothrow_move_constructible_v&lt;Type&gt;&gt;&gt; {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> instance(meta_storage &amp;buffer, Args &amp;&amp;... args) {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; buffer.instance = <span class="keyword">new</span> (&amp;buffer.storage) Type{std::forward&lt;Args&gt;(args)...};</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> destroy(meta_storage &amp;buffer) {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(buffer.instance)-&gt;~Type();</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> copy(meta_storage &amp;to, <span class="keyword">const</span> meta_storage &amp;from) {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; to.instance = <span class="keyword">new</span> (&amp;to.storage) Type{*<span class="keyword">static_cast&lt;</span><span class="keyword">const </span>Type *<span class="keyword">&gt;</span>(from.instance)};</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> steal(meta_storage &amp;to, meta_storage &amp;from) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; to.instance = <span class="keyword">new</span> (&amp;to.storage) Type{std::move(*<span class="keyword">static_cast&lt;</span>Type *<span class="keyword">&gt;</span>(from.instance))};</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; destroy(from);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; };</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; meta_storage() ENTT_NOEXCEPT</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; : storage{},</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; instance{},</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; destroy_fn{},</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; copy_fn{},</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; steal_fn{}</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; {}</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class="keyword">typename</span>... Args&gt;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keyword">explicit</span> meta_storage(std::in_place_type_t&lt;Type&gt;, [[maybe_unused]] Args &amp;&amp;... args)</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; : meta_storage{}</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">if</span> constexpr(!std::is_void_v&lt;Type&gt;) {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; type_traits&lt;Type&gt;::instance(*<span class="keyword">this</span>, std::forward&lt;Args&gt;(args)...);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; destroy_fn = &amp;type_traits&lt;Type&gt;::destroy;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; copy_fn = &amp;type_traits&lt;Type&gt;::copy;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; steal_fn = &amp;type_traits&lt;Type&gt;::steal;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type&gt;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; meta_storage(std::reference_wrapper&lt;Type&gt; value)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; : meta_storage{}</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; instance = &amp;value.get();</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class="keyword">typename</span> = std::enable_if_t&lt;!std::is_same_v&lt;std::remove_cv_t&lt;std::remove_reference_t&lt;Type&gt;&gt;, meta_storage&gt;&gt;&gt;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; meta_storage(Type &amp;&amp;value)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; : meta_storage{std::in_place_type&lt;std::remove_cv_t&lt;std::remove_reference_t&lt;Type&gt;&gt;&gt;, std::forward&lt;Type&gt;(value)}</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; {}</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; meta_storage(<span class="keyword">const</span> meta_storage &amp;other)</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; : meta_storage{}</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; (other.copy_fn ? other.copy_fn : [](<span class="keyword">auto</span> &amp;to, <span class="keyword">const</span> <span class="keyword">auto</span> &amp;from) { to.instance = from.instance; })(*<span class="keyword">this</span>, other);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; destroy_fn = other.destroy_fn;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; copy_fn = other.copy_fn;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; steal_fn = other.steal_fn;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; meta_storage(meta_storage &amp;&amp;other)</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; : meta_storage{}</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; swap(*<span class="keyword">this</span>, other);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; }</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; ~meta_storage() {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">if</span>(destroy_fn) {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; destroy_fn(*<span class="keyword">this</span>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; meta_storage &amp; operator=(meta_storage other) {</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; swap(other, *<span class="keyword">this</span>);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; [[nodiscard]] <span class="keyword">const</span> <span class="keywordtype">void</span> * data() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">return</span> instance;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; [[nodiscard]] <span class="keywordtype">void</span> * data() ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordflow">return</span> <span class="keyword">const_cast&lt;</span><span class="keywordtype">void</span> *<span class="keyword">&gt;</span>(std::as_const(*this).data());</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type, <span class="keyword">typename</span>... Args&gt;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordtype">void</span> emplace(Args &amp;&amp;... args) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; *<span class="keyword">this</span> = meta_storage{std::in_place_type&lt;Type&gt;, std::forward&lt;Args&gt;(args)...};</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; }</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; [[nodiscard]] meta_storage ref() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; meta_storage other{};</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; other.instance = instance;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordflow">return</span> other;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; [[nodiscard]] <span class="keyword">explicit</span> <span class="keyword">operator</span> bool() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="keywordflow">return</span> !(instance == <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <span class="keyword">friend</span> <span class="keywordtype">void</span> swap(meta_storage &amp;lhs, meta_storage &amp;rhs) {</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="keyword">using</span> std::swap;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="keywordflow">if</span>(lhs.steal_fn &amp;&amp; rhs.steal_fn) {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; meta_storage buffer{};</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; lhs.steal_fn(buffer, lhs);</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; rhs.steal_fn(lhs, rhs);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; lhs.steal_fn(rhs, buffer);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(lhs.steal_fn) {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; lhs.steal_fn(rhs, lhs);</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(rhs.steal_fn) {</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; rhs.steal_fn(lhs, rhs);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; swap(lhs.instance, rhs.instance);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; swap(lhs.destroy_fn, rhs.destroy_fn);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; swap(lhs.copy_fn, rhs.copy_fn);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; swap(lhs.steal_fn, rhs.steal_fn);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; }</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; storage_type storage;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordtype">void</span> *instance;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; destroy_fn_type *destroy_fn;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; copy_fn_type *copy_fn;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; steal_fn_type *steal_fn;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;};</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="keyword">struct </span>meta_type_node;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="keyword">struct </span>meta_prop_node {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; meta_prop_node * next;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; meta_any(* <span class="keyword">const</span> key)();</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; meta_any(* <span class="keyword">const</span> value)();</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;};</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;<span class="keyword">struct </span>meta_base_node {</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; meta_type_node * <span class="keyword">const</span> parent;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; meta_base_node * next;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; meta_type_node *(* <span class="keyword">const</span> type)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; const <span class="keywordtype">void</span> *(* const cast)(const <span class="keywordtype">void</span> *) ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;};</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;struct meta_conv_node {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; meta_type_node * <span class="keyword">const</span> parent;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; meta_conv_node * next;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; meta_type_node *(* <span class="keyword">const</span> type)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; meta_any(* const conv)(const <span class="keywordtype">void</span> *);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;};</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;struct meta_ctor_node {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="keyword">using</span> size_type = std::size_t;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; meta_type_node * <span class="keyword">const</span> parent;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; meta_ctor_node * next;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; meta_prop_node * prop;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="keyword">const</span> size_type size;</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; meta_type_node *(* <span class="keyword">const</span> arg)(size_type) ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; meta_any(* <span class="keyword">const</span> <a class="code" href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69">invoke</a>)(meta_any * <span class="keyword">const</span>);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;};</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;<span class="keyword">struct </span>meta_data_node {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <a class="code" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> id;</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; meta_type_node * <span class="keyword">const</span> parent;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; meta_data_node * next;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; meta_prop_node * prop;</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_static;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; meta_type_node *(* <span class="keyword">const</span> type)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordtype">bool</span>(* const set)(meta_handle, meta_any);</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; meta_any(* const <a class="code" href="namespaceentt.html#a8c24ecc5ab0055f9f2a4725c95afb29e">get</a>)(meta_handle);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;};</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;struct meta_func_node {</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="keyword">using</span> size_type = std::size_t;</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <a class="code" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> id;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; meta_type_node * <span class="keyword">const</span> parent;</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; meta_func_node * next;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; meta_prop_node * prop;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="keyword">const</span> size_type size;</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_const;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_static;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; meta_type_node *(* <span class="keyword">const</span> ret)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; meta_type_node *(* const arg)(size_type) ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; meta_any(* const <a class="code" href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69">invoke</a>)(meta_handle, meta_any *);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;};</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;struct meta_type_node {</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keyword">using</span> size_type = std::size_t;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="keyword">const</span> <a class="code" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> type_id;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; <a class="code" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> id;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; meta_type_node * next;</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; meta_prop_node * prop;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_void;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_integral;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_floating_point;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_array;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_enum;</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_union;</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_class;</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_pointer;</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_function_pointer;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_member_object_pointer;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_member_function_pointer;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_pointer_like;</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_sequence_container;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> is_associative_container;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; <span class="keyword">const</span> size_type rank;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; size_type(* <span class="keyword">const</span> extent)(size_type);</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; bool(* <span class="keyword">const</span> compare)(<span class="keyword">const</span> <span class="keywordtype">void</span> *, <span class="keyword">const</span> <span class="keywordtype">void</span> *);</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; meta_type_node *(* <span class="keyword">const</span> remove_pointer)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; meta_type_node *(* const remove_extent)() ENTT_NOEXCEPT;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; meta_base_node *base{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; meta_conv_node *conv{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; meta_ctor_node *ctor{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; meta_data_node *data{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; meta_func_node *func{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; void(* dtor)(<span class="keywordtype">void</span> *){<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;};</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Node&gt;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160;<span class="keyword">class </span>meta_range {</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; <span class="keyword">struct </span>range_iterator {</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keyword">using</span> difference_type = std::ptrdiff_t;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <span class="keyword">using</span> value_type = Node;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; <span class="keyword">using</span> pointer = value_type *;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; <span class="keyword">using</span> reference = value_type &amp;;</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; <span class="keyword">using</span> iterator_category = std::forward_iterator_tag;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; range_iterator() ENTT_NOEXCEPT = default;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; range_iterator(Node *head) ENTT_NOEXCEPT</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; : node{head}</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; {}</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; </div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; range_iterator &amp; operator++() ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordflow">return</span> node = node-&gt;next, *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; range_iterator operator++(<span class="keywordtype">int</span>) ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; range_iterator orig = *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keywordflow">return</span> ++(*this), orig;</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; }</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; [[nodiscard]] <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#aba73adf78736466214d47cd884de1c82">operator==</a>(<span class="keyword">const</span> range_iterator &amp;other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keywordflow">return</span> other.node == node;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; }</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; </div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; [[nodiscard]] <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#ad9accc71a383509ada028f7fa2b767bf">operator!=</a>(<span class="keyword">const</span> range_iterator &amp;other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; [[nodiscard]] pointer operator-&gt;() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; <span class="keywordflow">return</span> node;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; }</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; </div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; [[nodiscard]] reference operator*() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; <span class="keywordflow">return</span> *operator-&gt;();</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; }</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; Node *node{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; };</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; </div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; <span class="keyword">using</span> iterator = range_iterator;</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; </div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; meta_range() ENTT_NOEXCEPT = default;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; </div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; meta_range(Node *head)</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; : node{head}</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; {}</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; </div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; [[nodiscard]] iterator begin() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; <span class="keywordflow">return</span> iterator{node};</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; }</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; </div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; [[nodiscard]] iterator end() const ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; <span class="keywordflow">return</span> iterator{};</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; }</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; Node *node{<span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160;};</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; </div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; </div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160;<span class="keyword">template</span>&lt;auto Member, <span class="keyword">typename</span> Op&gt;</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160;<span class="keyword">auto</span> find_if(<span class="keyword">const</span> Op &amp;op, <span class="keyword">const</span> meta_type_node *node)</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160;-&gt; std::decay_t&lt;decltype(node-&gt;*Member)&gt; {</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; std::decay_t&lt;decltype(node-&gt;*Member)&gt; ret = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; </div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">for</span>(<span class="keyword">auto</span> &amp;&amp;curr: meta_range{node-&gt;*Member}) {</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; <span class="keywordflow">if</span>(op(&amp;curr)) {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; ret = &amp;curr;</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; }</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; <span class="keywordflow">if</span>(!ret) {</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; <span class="keywordflow">for</span>(<span class="keyword">auto</span> &amp;&amp;curr: meta_range{node-&gt;base}) {</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; <span class="keywordflow">if</span>(ret = find_if&lt;Member&gt;(op, curr.type()); ret) {</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; }</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; }</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; }</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160;}</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; </div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Type&gt;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160;<span class="keyword">class </span>ENTT_API meta_node {</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; static_assert(std::is_same_v&lt;Type, std::remove_cv_t&lt;std::remove_reference_t&lt;Type&gt;&gt;&gt;, <span class="stringliteral">&quot;Invalid type&quot;</span>);</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; [[nodiscard]] <span class="keyword">static</span> <span class="keywordtype">bool</span> compare(<span class="keyword">const</span> <span class="keywordtype">void</span> *lhs, <span class="keyword">const</span> <span class="keywordtype">void</span> *rhs) {</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; <span class="keywordflow">if</span> constexpr(!std::is_function_v&lt;Type&gt; &amp;&amp; is_equality_comparable_v&lt;Type&gt;) {</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">static_cast&lt;</span><span class="keyword">const </span>Type *<span class="keyword">&gt;</span>(lhs) == *<span class="keyword">static_cast&lt;</span><span class="keyword">const </span>Type *<span class="keyword">&gt;</span>(rhs);</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; <span class="keywordflow">return</span> lhs == rhs;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; }</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; </div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; <span class="keyword">template</span>&lt;std::size_t... Index&gt;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; [[nodiscard]] <span class="keyword">static</span> <span class="keyword">auto</span> extent(meta_type_node::size_type dim, std::index_sequence&lt;Index...&gt;) {</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; meta_type_node::size_type ext{};</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; ((ext = (dim == Index ? std::extent_v&lt;Type, Index&gt; : ext)), ...);</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keywordflow">return</span> ext;</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; }</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; [[nodiscard]] <span class="keyword">static</span> meta_type_node * <a class="code" href="namespaceentt.html#af786b2fb9c4667924bbed3b0bcb83cac">resolve</a>() ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; <span class="keyword">static</span> meta_type_node node{</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; <a class="code" href="structentt_1_1type__info.html#aefa2a63e4b4f41dbb783718bdc8c5a76">type_info&lt;Type&gt;::id</a>(),</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; {},</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; std::is_void_v&lt;Type&gt;,</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; std::is_integral_v&lt;Type&gt;,</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; std::is_floating_point_v&lt;Type&gt;,</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; std::is_array_v&lt;Type&gt;,</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; std::is_enum_v&lt;Type&gt;,</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; std::is_union_v&lt;Type&gt;,</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; std::is_class_v&lt;Type&gt;,</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; std::is_pointer_v&lt;Type&gt;,</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; std::is_pointer_v&lt;Type&gt; &amp;&amp; std::is_function_v&lt;std::remove_pointer_t&lt;Type&gt;&gt;,</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; std::is_member_object_pointer_v&lt;Type&gt;,</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; std::is_member_function_pointer_v&lt;Type&gt;,</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; is_meta_pointer_like_v&lt;Type&gt;,</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; has_meta_sequence_container_traits_v&lt;Type&gt;,</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; has_meta_associative_container_traits_v&lt;Type&gt;,</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; std::rank_v&lt;Type&gt;,</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; [](meta_type_node::size_type dim) {</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; <span class="keywordflow">return</span> extent(dim, std::make_index_sequence&lt;std::rank_v&lt;Type&gt;&gt;{});</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; },</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; &amp;compare, <span class="comment">// workaround for an issue with VS2017</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; &amp;meta_node&lt;std::remove_const_t&lt;std::remove_pointer_t&lt;Type&gt;&gt;&gt;<a class="code" href="namespaceentt.html#af786b2fb9c4667924bbed3b0bcb83cac">::resolve</a>,</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; &amp;meta_node&lt;std::remove_const_t&lt;std::remove_extent_t&lt;Type&gt;&gt;&gt;<a class="code" href="namespaceentt.html#af786b2fb9c4667924bbed3b0bcb83cac">::resolve</a></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; };</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; </div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; <span class="keywordflow">return</span> &amp;node;</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; }</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160;};</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; </div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; </div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Type&gt;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160;<span class="keyword">struct </span>meta_info: meta_node&lt;std::remove_cv_t&lt;std::remove_reference_t&lt;Type&gt;&gt;...&gt; {};</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; </div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; </div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160;}</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; </div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; </div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;}</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; </div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160;<span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespaceentt_html_a8c24ecc5ab0055f9f2a4725c95afb29e"><div class="ttname"><a href="namespaceentt.html#a8c24ecc5ab0055f9f2a4725c95afb29e">entt::get</a></div><div class="ttdeci">constexpr get_t&lt; Type... &gt; get</div><div class="ttdoc">Variable template for lists of observed components.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2utility_8hpp_source.html#l00040">utility.hpp:40</a></div></div>
<div class="ttc" id="anamespaceentt_html_a13e040e7b38a8f86d1ab2f096f37b627"><div class="ttname"><a href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">entt::id_type</a></div><div class="ttdeci">std::uint32_t id_type</div><div class="ttdoc">Alias declaration for type identifiers.</div><div class="ttdef"><b>Definition:</b> <a href="core_2fwd_8hpp_source.html#l00012">fwd.hpp:12</a></div></div>
<div class="ttc" id="anamespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace.</div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00013">algorithm.hpp:13</a></div></div>
<div class="ttc" id="astructentt_1_1type__info_html_aefa2a63e4b4f41dbb783718bdc8c5a76"><div class="ttname"><a href="structentt_1_1type__info.html#aefa2a63e4b4f41dbb783718bdc8c5a76">entt::type_info::id</a></div><div class="ttdeci">static id_type id() noexcept</div><div class="ttdoc">Returns the numeric representation of a given type.</div><div class="ttdef"><b>Definition:</b> <a href="type__info_8hpp_source.html#l00114">type_info.hpp:114</a></div></div>
<div class="ttc" id="anamespaceentt_html_af786b2fb9c4667924bbed3b0bcb83cac"><div class="ttname"><a href="namespaceentt.html#af786b2fb9c4667924bbed3b0bcb83cac">entt::resolve</a></div><div class="ttdeci">meta_type resolve() noexcept</div><div class="ttdoc">Returns the meta type associated with a given type.</div><div class="ttdef"><b>Definition:</b> <a href="resolve_8hpp_source.html#l00020">resolve.hpp:20</a></div></div>
<div class="ttc" id="anamespaceentt_html_aa512a354fe328df6be5a92eb43cd4d69"><div class="ttname"><a href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69">entt::invoke</a></div><div class="ttdeci">void invoke(basic_registry&lt; Entity &gt; &amp;reg, const Entity entt)</div><div class="ttdoc">Helper to create a listener that directly invokes a member function.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00124">helper.hpp:124</a></div></div>
<div class="ttc" id="anamespaceentt_html_ad9accc71a383509ada028f7fa2b767bf"><div class="ttname"><a href="namespaceentt.html#ad9accc71a383509ada028f7fa2b767bf">entt::operator!=</a></div><div class="ttdeci">constexpr bool operator!=(const basic_hashed_string&lt; Char &gt; &amp;lhs, const basic_hashed_string&lt; Char &gt; &amp;rhs) noexcept</div><div class="ttdoc">Compares two hashed strings.</div><div class="ttdef"><b>Definition:</b> <a href="hashed__string_8hpp_source.html#l00227">hashed_string.hpp:227</a></div></div>
<div class="ttc" id="anamespaceentt_html_aba73adf78736466214d47cd884de1c82"><div class="ttname"><a href="namespaceentt.html#aba73adf78736466214d47cd884de1c82">entt::operator==</a></div><div class="ttdeci">constexpr bool operator==(const Entity entity, null_t other) noexcept</div><div class="ttdoc">Compares a null object and an entity identifier of any type.</div><div class="ttdef"><b>Definition:</b> <a href="entity_8hpp_source.html#l00158">entity.hpp:158</a></div></div>
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